Heating apparatus.



No. 724,918. I PATBNTED-APR, 7', 19o-s.

R. G. MQAULBY..

HEATING APPARATUS.

APPLICATION FILED FEB. 4, 1903.

l0 MODEL.

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PATENTED APR. 7,l 1903. R. G. MOAULEY. HEATING APPARATUS. APPLICATION FILED 1112.4. 190s.'

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Il@ 0672 far UNITED STATES PATENT OFFICE.

ROBERT G. MCAULEY, OF PITTSBURG, PENNSYLVANIA;

HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 724,918, dated April 7, 1903.

Application iiled February 4I 1903. Serial No. 141,827. (No model.) i

To all L11/"1.01ct t muy concern;

Be it known that I, ROBERT G. MCAULEY, a citizen of the United States,residin g at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Heating Apparatus, of which the following is a specification', reference being had therein to the accompanying -drawings, forming part of this specification, in which- Figure 1 is a view in side elevation of a series of my improved heaters assembled, one of the heaters being shown in vertical section. Fig. 2 is a plan View, partially in section, indicated by the line Il Il of Fig. 1. Fig. 3 is a view in side elevation, showing the hot-air connections from the heaters to distributingregisters. Fig. 4 is a cross-sectional View on the line IV IV of Fig. 1. Fig. 5 is a similar view on the line V V of Fig. 1.

My invention refers to heating apparatus wherein a body of cold air is caused to circulate around and through heating-chambers in contact with heating-surfaces adapted to conduct the products of combustion from a gas or other fuel burner, the heated air being finally conveyed away to any suitable point of distribution.

The objects of the invention are to provide a simple and economical construction for the purpose whereby one or more complete apparatus may be installed, either alone or together, and the heated air produced inV such degree and volume as is required for each point of application or distribution-as, for instance, a room as required. l

Referring to the drawings, 2 is the base, of cast-iron of any suitable form, but preferably circular, and adapted to contain a gas or fuel burner 3. Upon the top of base 2 is set a pedestal 4,'having at its middle portion an upwardly-extending dome 5, providing a cover for the combustion-chamber and having at its upper portion an annular base 6 and outer and inner annular Iian ges 7 8. The lower portion 4 and upper portion 6 of the pedestal are connected by a series of hollow posts 9, the interior passages 10 of which communicate with the combustion-chamber and serve to carry olf the products of combustion and to deliver them upwardly between an outer shell 11 and an inner shell 12, of sheet metal. At the upper portion of the apparatus As thus assembled allo'fthe various partsof 65 the apparatus are tightly clamped together by two or more vertical bolts 20 passing downwardly through the upper horizontal portion of the casting 13 and the base 4 inside of shell 18. Extending upwardly above the top 13 is the hot-air pipe'2l, forming a-continuation of the interior 22 within shell 12, by which i the heated air is carried off to the registers.

Fuel is supplied to the burne'r 3 by pipe 23, providedwith the usual airmixer and controlling-valve, and the combustion-chamber is provided with a door 24 in the side of the base 2 for lighting or purposes of inspection. Ifdesired, a pilot-burner may be connected with the fuel-pipe and in suitable proximity to the burner 3, so as to ignite the burner, as will` be readily understood. As thus constructed cold air enters the space 25, between the casings 11 and 18, through openings 19, passing downwardly and inwardly between and around posts 9 and into contact with dome 5, then upwardly through the interior of the central channel 22, and finally out to conductor-pipe 2l. The burner 3 heats the surrounding walls and dome, the products of combustion passing .up through conduits -10 in the interior of the posts 9 and into the annularI space 26 between the shells V11 and 12, iinally passing outwardly ,through pipe 16 to the flue. In this manner `the cold airA is brought directly into contact with a large area of heated partition-surfaces and with the dome and in its downward and upward circulation will become highly heated, according to the degree of heat generated by the burner.

The apparatus is preferably set upon a su pporting platform or base 27, located upon suitable pedestals above the fioor, and while in the drawings I have shown three of the devices, comprising separate units, as mounted on the same base it will be readily understood that a single unit may be employed or that any number may be mounted and assembled together in the same manner.

AIn Fig. 3 I have indicated in dotted lines an outer surrounding shell or casing 28,adapt ed to embrace all of the heaters, to the lower` portion of which shell air may be supplied from the outside atmosphere by suitable conducting-pipes 29, and by this construction the air will first enter at the base' around the heaters and then pass upwardly, becoming partially heated, entering the openings 19, and following the circulation already described.

The apparatus may be used as a single unit to supply a single room or so assembled to supplya number of rooms with heated air, and the desired amount and temperature may be easily adjusted in each heater for each separate room. This is a feature of decided advantage and gives economy of fuel, while in their assembled form a number of heaters occupy practically no more space than a single ordinary heater from which various pipe connections are taken for supplying several rooms.

The construction of each unit is very simple and cheap. They may be made in various sizes as required and are so arranged that they maybe bolted upon the supporting-base 27 and secured by a bolt at the top by means of flanges 30, as clearly shown in Fig. 1.

The advantages of my invention will be readily appreciated, and While changes and variations may be made in the proportions, arrangement, or other details by the skilled mechanic all such are to be considered as within the scope of the following claims.

Vhat I claim is- 1. Aheating apparatus consisting of a combustion-chamber, a burner therefor, a covering for the combustion chamber provided with upwardly-extending combustion-conduits, inner and outer shells providing an eX- tension of said conduits and a central airpassage, and an outer surrounding shell providing an air-space, with means for introducing the air thereto, substantially as set forth.

2. Aheating apparatus consisting of a combustion-chamber, a burner therefor, a domeshaped covering for the combustion-chamber provided with upwardly-extending combustion-conduits, inner and outer shells providing an extension of said conduits and a central air-passage and an outer surrounding shell providing an air-space, with means for introducing the air thereto, and a hot-air-conducting pipe forming an extension of the central chamber, substantially as set forth.

3. Aheating apparatus consistingof a combustio11chamber, a burner therefor, a cover for the combustion-chamber provided witha central dome and a series of upwardly-extending combustion-conduits, air-spaces between the conduits, inner and outer shells extending upwardly above the conduits and providing an extension thereof, a centra-l airpassage, an outer surrounding shell providing an air-space, means for introducing the air thereto, and a top, with means for securing the parts together, substantially as set forth.

4. Aheating apparatus consisting of a combustion-chamber, a burner therefor, a cover for the combustion-chamber provided with a central dome and a series of upwardly-extending combustion-conduits, air-spaces between the conduits, inner and outer shells extending upwardly above the conduits and providing an extension thereof, a central air-passage, an outer surrounding shell providing an air-space, means for introducing the air thereto, and a top provided with an extended hot-air-conducting pipe, with means forsecuring the parts together, substantially as set forth.

5. A heating apparatus consisting of a hollow base provided with an upwardly-extending flange, a burner located in said base, a covering for the base provided with a domeshaped central portion, a series of upwardlyextending combustion-conduits with intervening air-spaces, inner and outer flanges and a central opening above said cover, inner and outer shells providing an intervening combustion-conduit and a' central air-passage, an outer surrounding shell providing an airspace, a top plate provided with dan ges adapted to engage the shells, securing-bolts for clamping the parts together, and a central hot-air-conducting pipe, substantially as set forth.

6. A heating apparatus consisting of a hollow base provided with an upwardly-extending flange, a burner located in said base, a covering for the base provided with a domeshaped central portion, a series of upwardlyextending combustion-conduits with intervening air-spaces, inner and outer flanges and a central opening above said cover; inner and outer shells providing an intervening combustion-conduit and a central air-passage, an outer surrounding shell providing an airspace, a top plate provided with flanges adapted to engage the shells, securing-bolts for clamping the parts together, and a central hot-air-conducting pipe, with means for carrying 0E the products of combustion substantially as set forth.

IIO

air-passages of eachunit, substantially as set 1o forth.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT G. MCAULEY.

Witnesses:

C. M. CLARKE,

R. H. MCLARN. 

